Reed and method for producing same

Abstract

A reed and a method for producing a reed. The reed has a multiplicity of dents, which are arranged in a width direction, forming interspaces each having a dent spacing. Each dent has two opposite end sections, at which the dents are respectively connected to a carrier and to the immediately adjacent dent or dents by an adhesive connection. In at least one end section, the dent has a plurality of a spacer studs, which are preferably produced by embossing. The spacer studs form a depression on the one, first side and, on the opposite, second side, form a projection having a stud outer surface. The sum of all the stud outer surfaces of the spacer studs of a single end section of a dent has a proportion of at most 15% of the total end section surface on this second side.

Claims

1. A reed (15), comprising: a plurality of dents (16) that extend in a longitudinal direction (L) between a first end (17) and an opposite second end (18), wherein individual ones of the plurality of dents (16) have end sections (19) adjoining the first end (17) and the second end (18) respectively and have a working section (20) between the end sections (19), whereas individual ones of the plurality of dents (16) have a first dent outer surface (A1) extending in a first plane (E1) in the working section (20) and have a second dent outer surface (A2) extending in a second plane (E2) in the working section (20), wherein the two planes (E1, E2) are orientated parallel to each other, wherein in at least one end section (19) of at least one of the plurality of dents (16) multiple spacer studs (30) are present that are deepened at a first side (S1) compared with the first plane (E1) respectively and that are raised at a second side (S2) compared with the second plane (E2), wherein a percentage of a sum of the stud outer surface areas (F) of all of the multiple spacer studs (30) at their second side is at most 15% of a total end section surface area of a common end section (19) at the second side, and an adhesive bond is created between adjacent end sections (19) of individual ones of the plurality of dents (16).

2. The reed according to claim 1, wherein the multiple spacer studs each have an inner surface area (I) at the respective first sides (S1) thereof and a percentage of a sum of the stud inner surface areas (I) of all of the multiple spacer studs (30) is at most 15% of the total end section surface area at the first side.

3. The reed according to claim 1, wherein individual ones of the multiple spacer studs (30) are free of through-holes.

4. The reed according to claim 1, wherein individual ones of the end sections (19) of the plurality of dents are free of through-holes.

5. The reed according to claim 1, wherein the plurality of dents comprises two outer dents (16r) and multiple intermediate dents (16m), wherein at least all of the intermediate dents (16m) comprise spacer studs (30) in one or both end sections (19).

6. The reed according to claim 1, wherein all of the plurality of dents (16) comprise spacer studs (30) in one or both end sections (19).

7. The reed according to claim 1, wherein each of the multiple spacer studs (30) has a central stud portion (31).

8. The reed according to claim 7, wherein each of the multiple spacer studs (30) has an outer stud portion (32) that surrounds the central stud portion (31).

9. The reed according to claim 7, wherein each of the multiple spacer studs (30) has an outer stud portion (32) that surrounds the central stud portion (31) and the central stud portion (31) is conical or cylindrical or ball shaped and/or the outer stud portion (32) is conical.

10. The reed according to claim 1, wherein individual ones of the multiple spacer studs (30) of directly adjacent end sections (19) of two of the plurality of dents (16) are aligned with respect to each other.

11. The reed according to claim 1, wherein individual ones of the multiple spacer studs (30) have a height H compared with the second plane (E2) that corresponds to the distance between the first plane (E1) and the second plane (E2).

12. The reed according to claim 1, wherein individual ones of the multiple spacer studs (30) have a diameter (D) and a height (H) from the second plane (E2), wherein the diameter (D) is 5 to 10 times as large as the height (H).

13. The reed according to claim 1, wherein individual ones of the plurality of dents (16) are connected via their two end sections (19) to a carrier (27) by an adhesive bond, wherein two directly adjacent dents (16) of the plurality of dents respectively either do not abut against each other or spacer studs (30) of one of the two directly adjacent dents (16) abut with the second side (S2) of the respective other directly adjacent dent (16).

14. A method for producing a reed (15) according to claim 1 comprising the following steps: Embossing at least one of the plurality of dents (16) for creating the multiple spacer studs (30) in at least one end section (19) of the at least one dent (16) in an embossment station (40), Positioning individual ones of the plurality of dents (16) with a defined distance with respect to each other in an assembly station (43), Creating an adhesive bond between individual ones of the adjacent end sections (19) of the plurality of dents (16).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Preferred embodiments of the invention are derived from the dependent claims, the description as well as the drawings. In the following preferred embodiments of the invention are explained in detail with reference to the attached drawings. The drawings show:

(2) FIG. 1 a schematic illustration of a reed in a view in warp thread direction,

(3) FIGS. 2 and 3 a schematic illustration respectively of multiple dents of a reed in a cross-section,

(4) FIG. 4 a schematic illustration of an inventive embodiment of a dent in a top view in warp thread direction,

(5) FIG. 5 a preferred embodiment of a spacer stud in a cross-section through the end section of the dent of FIG. 4, wherein spacer studs of adjacent dents are arranged in an aligned configuration,

(6) FIG. 6 an enlarged illustration of the area VI in FIG. 5,

(7) FIG. 7 the embodiment of the spacer stud of FIG. 5, wherein the spacer studs are arranged offset to each other,

(8) FIG. 8 a schematic illustration of the positioning of multiple dents of a reed,

(9) FIGS. 9 and 10 a schematic illustration of an end section of a dent respectively with multiple spacer studs in different arrangement and

(10) FIG. 11 a schematic block diagram like illustration of an exemplary method procedure for producing an inventive reed.

DETAILED DESCRIPTION

(11) A reed 15 is schematically illustrated in FIG. 1. The reed 15 comprises a plurality of dents 16 that are orientated parallel to each other and arranged with distance to each other. Each dent 16 has a first end 17 and a second end 18 and extends in longitudinal direction L between the first end 17 and the second end 18 (FIG. 4). The two ends 17, 18 form faces or edges of the dent 16. A respective end section 19 adjoins the first end 17 and the second end 18 respectively. In longitudinal direction the two end sections 19 are separated from each other by a working section 20 of the dent 16 that is arranged in between. The first end 17 and the second end 18 are connected with each other by two edges, a front edge 21 and a back edge 22 that extend in longitudinal direction L. The front edge 21 and the back edge 22 are arranged with distance to each other in transverse direction Q.

(12) Each of the dents 16 has a first dent outer surface A1 in the working section 20 and on the opposite side in the working section 20 a second dent outer surface A2 (FIG. 4). The first dent outer surface A1 extends in a first plane E1 and the second dent outer surface A2 extends in a second plane E2. The two planes E1, E2 are orientated parallel to each other and are spanned by the longitudinal direction L and the transverse direction Q.

(13) The dents 16 of the reed 15 are arranged in a width direction B involving the formation of defined interspaces 25 between the working sections 20 of directly adjacent dents 16. In the width direction B the interspaces 25 have the same size. The interspaces 25 serve to guide warp threads 26 in the width direction B and to preset the distance between the warp threads 26 in width direction B and to keep it constant. As shown in FIG. 1, the dents 16 are arranged in an assigned carrier 27 of the reed 15 with their end sections 19. The dents 16 can be connected with their end sections 19 to the carriers 27 of the reed 15 by means of an adhesive bond. Due to the adhesive bond, also the end sections 19 of the dents 16 that are arranged side by side in width direction B are also connected with each other. The adhesive bond between the end sections 19 of the dents 16 and the respective carrier 27 is highly schematically illustrated in FIG. 11. An adhesive 28 is illustrated in a dotted manner in FIG. 11. It is apparent that the adhesive 28 flows in the gaps between two respectively adjacent end sections 19 of the dents 16.

(14) An ideal desired orientation of the dents 16 is schematically illustrated in FIG. 2. All of the dents 16 are orientated parallel with each other having equal distances respectively. In the practice the production of the adhesive bond between the end sections 19 of the dents can have the result that individual end sections 19 or individual dents 16 deform. This can be explained by the fact that the adhesive flow irregularly and not simultaneously in the respective gaps between the adjacent end sections 19. Capillary forces are created that can deform the very thin dents 16 of the reed 15. Such an undesired deformation is exemplarily illustrated in FIG. 3.

(15) In order to counteract this, some or preferably all dents 16 have multiple spacer studs 30 in one and according to the example in both end sections 19 respectively. According to the example, in one end section 19 at least three and preferably five to ten spacer studs 30 are present. The working section 20 is free of spacer studs 30 and other depressions or elevations at the dent 16. The end section 19 adjoining the first end 17 ends at the location at which a spacer stud 30 is located that has the largest distance to the first end 17. The end section 19 adjoining the second end 18 ends at the location at which a spacer stud 30 is located that has the largest distance to the second end 18. At this location with the largest distance of a spacer stud from the first end 17 or the second end 18 a straight line G is drawn in transverse direction Q parallel to the respective edge of the first end 17 or the second end 18 respectively that forms the end of the respective end section 19 (FIGS. 9 and 10).

(16) In the preferred embodiment the spacer studs 30 are created by embossing. They are deepened relative to the first plane E1 at a first side S1 and are elevated at an opposite second side S2 relative to the second plane E2. A preferred embodiment of the spacer studs 30 is shown in cross-section in FIGS. 5-7 respectively.

(17) The second side S2 of the spacer studs 30 is located at the side of the dent 16 at which the second dent outer surface A2 adjoins in the working section 20. Accordingly, the first side S1 of the spacer studs 30 is located at the side of the dent 16 at which the working section 20 has its first dent outer surface A1 (FIG. 4). At the first side S1 each spacer stud has a stud inner surface I that adjoins to the first plane E1 and limits the concave deepened area of the spacer stud 30. On the opposite second side S2 each spacer stud 30 has a stud outer surface F that adjoins the second plane E2 and limits the convex projecting or elevating part of the spacer stud 30. The stud inner surface I and the stud outer surface F are shown in FIG. 5.

(18) The number and size of the spacer studs 30 in one single end section 19 is selected, such that the sum of all stud outer surfaces F compared with the total end section area of this end section 19 on the second side S2 has an amount of at most 15% or at most 10% or at most 8%. The total end section area on the second side S2 is the area that is formed by the surface area section of the end section extending in the second plane E2 in addition to the sum of the stud outer surfaces F. Additionally or alternatively, the percentage of the sum of all stud inner surfaces I in one common end section 19 has an amount of at most 15% or at most 10% or at most 8% of the total end section area on the first side S1. The total end section area on the first side S1 is the area of the end section 19 resulting from the sum of all of the stud inner surfaces I of all of the spacer studs 30 in this end section 19 in addition to the surface area section of the end section 19 that extends in the first plane E1.

(19) In the herein preferred embodiment all of the spacer studs 30 of a common end section 19 or a dent 16 and preferably all of the dents 16 are configured identically. In doing so, the production of the spacer studs 30 or the dents 16 is simplified.

(20) As it is apparent in FIGS. 5-7, in the preferred embodiment described herein each spacer stud 30 has a central stud portion 31 that is surrounded by an outer stud portion 32. The central stud portion 31 is preferably rotationally symmetrically configured to an axis that extends in the width direction B and thus orthogonal to the planes E1, E2. The central stud portion 31 can be configured cylindrically or in the form of a truncated cone or in the form of a ball scraper.

(21) In the embodiment illustrated herein the central stud portion 31 has a central wall section 33 that extends substantially parallel to the second plane E2. This central wall section 33 can also be configured in a convex curved manner with view from the second side S2 onto the spacer stud 30. The central wall section 33 is, e.g. circular and connected with the outer stud portion 32 by a connection wall section 34. The connection wall section 34 has a conical shape and forms a hollow truncated cone. The connection wall section 34 extends the diameter of the central stud portion 31 from the central wall section 33 toward the outer stud portion 32. If the central wall section 33 has the shape of a ball scraper or another convex curved form, the connection wall section 34 can also be omitted.

(22) The outer stud portion 32 is optional and can be omitted in a non-illustrated embodiment. In the preferred embodiment it serves to provide a spring effect to the spacer stud 30. For this the outer stud portion 32 has a conical shape and forms a hollow truncated cone. A cone angle of the outer stud portion 32 measured between the first plane E1 and the stud inner surface I is very small and has an amount of less than 5 or less than 3 in the preferred embodiment. A cone angle of the connection wall section 34 is, however, larger and has an amount of preferably at least 30 or at least 40.

(23) As it is illustrated in FIG. 5, the spacer studs 30 of adjacent end sections 19 of the dents 16 can be arranged in the width direction B aligned with each other. The spacer studs 30 are, e.g. created by a forming process and preferably an embossing process. Due to the forming and the created material flow, the dimension of a spacer stud 30 on the second side S2 is larger than on the first side S1. Therefore, it is avoided that adjacent dents 16 abut against each other completely without distance also in case of an aligned arrangement of the spacer studs 30. Alternatively to the schematic illustrations in FIGS. 5 and 6, the spacer studs 30 of directly adjacent end sections 19 of two dents 16 can also be arranged offset from each other parallel to the planes E1, E2 (FIG. 7). Apart therefrom the configuration of the spacer studs 30 in FIG. 7 corresponds to the configuration in FIGS. 5 and 6.

(24) Starting from the second plane E2 the spacer stud 30 has a height H that defines the location with the largest distance to the second plane E2. In the embodiment described herein the height H is defined by that portion of the stud outer surface F that is located at the central wall section 33. This height H of the spacer stud 30 defines the minimum distance that two directly adjacent dents have in the area of their working sections 20. The height H corresponds preferably substantially to the thickness or width S of the dent 16. The width S of the dent 16 is defined by the distance between the first plane E1 and the second plane E2. In the embodiment described herein the diameter D of the spacer stud 30 has an amount of about 8 to 12 times and preferably 10 times of the height H. If the outer stud portion 32 is omitted in a not illustrated embodiment, the diameter D of the spacer stud 30 has an amount of about 4 times to 6 times and preferably 5 times of the height H.

(25) As explained above, all of the dents 16 can comprise spacer studs 30 in both end sections 19 respectively. In order to guarantee the minimum distance between the dents 16 the provision of spacer studs 30 at all of the dents 16 is not necessarily required. As illustrated in FIG. 1, the reed 15 has with view in width direction B two lateral outer dents 16r and intermediate dents 16m that are arranged in between. At least one of the lateral outer dents 16r does not require spacer studs, because only at one side of the lateral outer dents 16r an intermediate dent 16m is present. If this adjacent intermediate dent 16m comprises spacer studs toward the lateral outer dent 16r, the lateral outer dents 16r can be configured without spacer studs. If the spacer studs 30 of dents 16 are arranged in aligned configuration in width direction B, preferably all of the dents 16 comprise spacer studs. For unifying of the manufacturing of the dents 16 and in order to guarantee that each dent 16 can be used at any location in the reed 15, preferably all of the dents 16 are provided with spacer studs 30 in at least one or both end sections 19.

(26) The number and position of the spacer studs 30 in an end section 19 can vary. Only by way of example two possibilities of arrangement are illustrated in FIGS. 9 and 10. In the embodiment shown in FIG. 10 the spacer studs 30 are matrix-shaped arranged in rows and columns with regular distances in the end sections 19. In the embodiment illustrated in FIG. 9 the rows that are directly adjacent in longitudinal direction L are offset in transverse direction Q. The possibilities of arrangement of the spacer studs in the end sections 19 are versatile. Also irregular arrangement variations are possible. It is substantial that the inventive surface area percentage of the spacer studs compared with the total end section area is observed in order to keep the capillary forces during creation of the adhesive bond small and to, however, guarantee a minimum distance between directly adjacent dents 16 for creation of the interspace 25.

(27) Method steps for producing the reed 15 are schematically illustrated in FIG. 11. First the dents 16 are provided as band-shaped or strip-shaped foil or metal sheet parts. These dents 16 are embossed in an embossment station 40 in order to create the spacer studs 30 in the end sections. For this the embossment station 40 comprises one or more embossment stamps 41 that cooperate with a die 42 in order to create the spacer studs 30.

(28) Subsequently the embossed dents 16 are positioned and orientated relative to each other in an assembly station 43. In doing so, a dent spacing x is adjusted between directly adjacent dents 16 or their working sections 20 that is preferably slightly larger than the height H of the spacer studs. For example the height H of a spacer stud can have an amount of about 0.015 mm to 0.025 mm and the dent spacing x can be at most 10% or at most 5% larger than the height H of the spacer studs. In the non-aligned orientation of the spacer studs (FIG. 7) the minimum distance or the smallest dent spacing x is equal to the height H of the spacer studs 30. In case of the aligned orientation, if the spacer studs 30 comprise an outer stud portion 32, the central stud portion 31 can engage at its second side S2 at least partly into the depression provided there at the first side S1 of the adjacent spacer stud 30. The minimum distance or the smallest dent spacing x between two adjacent dents 16 can thus be smaller than the height H of the spacer studs 30 (compare FIGS. 5 and 6). In all cases, however, a minimum distance between directly adjacent dents 16 is guaranteed by the spacer studs 30.

(29) In the assembly station 43 the positioned and aligned dents 16 can be preliminarily attached to each other by means of a preferably flexible or bendable fixing means, such as a wire 44. In this preliminarily fixed condition the adhesive bond between the end sections 19 of the dents 16 arranged side by side to each other in width direction B and assigned to a common carrier 27 is created. In doing so, adhesive 28 flows in the gap between the adjacent end sections 19 and thus creates an adhesive bond. Because of the small spacer studs 30 in terms of their area, it is guaranteed that on one hand a minimum distance between the dents 16 is guaranteed and on the other hand capillary forces are kept sufficiently small. During the creation of the adhesive bond between the dents 16 also an adhesive bond is created with the respective carriers 27.

(30) The embossing station 40 and the assembly station 43 can form part of a common device or machine. The manufacturing process can be carried out in an automated manner. The dent spacing x is preferably adjusted in the assembly station 43 by a highly precise machine axis.

(31) The invention refers to a reed 15 and a method for producing the same. The reed 15 comprises a plurality of dents 16 that are arranged in a width direction B at a dent spacing x respectively, thereby forming interspaces 25. Each dent 16 has two opposite end sections 19 at which it is connected with a carrier 27 and with the directly adjacent dent or dents 16 by means of an adhesive bond respectively. In at least one or in both end sections 19 the dent 16 has a plurality of spacer studs 30 that are preferably created by embossing. The spacer studs 30 form a depression on the one first side S1 and on the opposite second side S2 a projection with a stud outer surface F. The sum of all stud outer surfaces F of the spacer studs 30 of one single end section 19 of a dent 16 has a percentage of at most 15% or at most 10% or at most 8% of the total end section area on this second side S2.

LIST OF REFERENCE SIGNS

(32) 15 reed 16 dent 16m intermediate dent 16r lateral outer dent 17 first end 18 second end 19 end section 20 working section 21 front edge 22 back edge 25 interspaces 26 warp thread 27 carrier 28 adhesive 30 spacer studs 31 central stud portion 32 outer stud portion 33 central wall section 34 connection wall section 40 embossment station 41 embossment stamp 42 die 43 assembly station 44 wire cone angle of the outer stud portion A1 first dent outer surface A2 second dent outer surface B width direction D diameter of the spacer stud E1 first plane E2 second plane F stud outer surface G straight line H height of the spacer stud I stud inner surface L length direction Q transverse direction S width of the spacer stud S1 first side S2 second side x dent spacing